Valve disk



FIG. 1 is a front, right perspective view of a valve pin showing my new design, the rear, left perspective view of the valve being a mirror image thereof;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof. 

CLAIM The ornamental design for a valve disk, as shown and described. 